From Oregon Flora, Gardening with Natives:
Cusick’s rose checkermallow is becoming uncommon in its natural habitat where it generally grows in sunny and open riparian habitats and moist fields. Its arresting deep rose-pink flowers grow in dense racemes that are loved by native butterflies and other pollinators. It makes a showstopping addition to meadowscapes and wildflower or pollinator gardens. This tall herbacious perennial grows to 6 feet and is an ideal replacement for ornamental hollyhocks, loosestrife, and snapdragons.
From East Multnomah SWCD:
A delightful, hollyhock-like perennial rarely found outside its native Oregon, and not in every county. Stands of this perennial have been reported in Washington, Multnomah, Yamhill, Benton, Linn, Lane, Douglas, Coos and Jackson counties, but not all are documented.